What’s more exciting than finding out if Castle and Beckett will spend an entire episode handcuffed together (Season 4, Episode 10, “Cuffed”)? Finding out how they got chained up in the first place.

Series creator Andrew Marlowe spoke with TV Line, and while he wouldn’t divulge the specifics, he did say “fans should be very curious as to why” Caskett’s all tied up.

Thing is, the fans won’t be the only ones puzzled by the cuffs: “I think Beckett and Castle are very curious as to why they are cuffed together, and wonder why they can’t remember exactly how it happened,” Marlowe said.

Hmm. Could a night of fun, drunken debauchery have led to the shackles? (We wish.) Or maybe the couple was attacked, drugged, and cuffed by someone they’re investigating? (Much more likely.)

Either way, we’re hoping neither one of them has to go to the bathroom with those things on. Things could get awkward real quick.